Related to this, in any type of IMHO thread where one is asked to name a favorite/best/worst/etc XXXX, someone will chime in with “I CAN’T BELIEVE NOBODY MENTIONED [YYYY]!!!”, where YYYY had, in fact, already been mentioned, possibility multiple times, and often in the OP itself.
(Actually, that’s a bit of a forced formulation of the law to follow the OP’s structure in the subject line. It’s more that whenever a poster starts a sentence with “I can’t believe nobody’s mentioned” or “I can’t believe I’m the first to say…” they are, 95% of the time, not the first at all.)